From: Muchun Song <songmuchun@bytedance.com> To: hannes@cmpxchg.org, mhocko@kernel.org, roman.gushchin@linux.dev, shakeelb@google.com Cc: cgroups@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, duanxiongchun@bytedance.com, longman@redhat.com, Muchun Song <songmuchun@bytedance.com> Subject: [PATCH v4 11/11] mm: lru: use lruvec lock to serialize memcg changes Date: Tue, 24 May 2022 14:05:51 +0800 [thread overview] Message-ID: <20220524060551.80037-12-songmuchun@bytedance.com> (raw) In-Reply-To: <20220524060551.80037-1-songmuchun@bytedance.com> As described by commit fc574c23558c ("mm/swap.c: serialize memcg changes in pagevec_lru_move_fn"), TestClearPageLRU() aims to serialize mem_cgroup_move_account() during pagevec_lru_move_fn(). Now folio_lruvec_lock*() has the ability to detect whether page memcg has been changed. So we can use lruvec lock to serialize mem_cgroup_move_account() during pagevec_lru_move_fn(). This change is a partial revert of the commit fc574c23558c ("mm/swap.c: serialize memcg changes in pagevec_lru_move_fn"). And pagevec_lru_move_fn() is more hot compare with mem_cgroup_move_account(), removing an atomic operation would be an optimization. Also this change would not dirty cacheline for a page which isn't on the LRU. Signed-off-by: Muchun Song <songmuchun@bytedance.com> --- mm/memcontrol.c | 31 +++++++++++++++++++++++++++++++ mm/swap.c | 45 ++++++++++++++------------------------------- mm/vmscan.c | 9 ++++----- 3 files changed, 49 insertions(+), 36 deletions(-) diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 1a35f7fde3ed..7b6d9c308d91 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -1331,12 +1331,38 @@ struct lruvec *folio_lruvec_lock(struct folio *folio) lruvec = folio_lruvec(folio); spin_lock(&lruvec->lru_lock); + /* + * The memcg of the page can be changed by any the following routines: + * + * 1) mem_cgroup_move_account() or + * 2) memcg_reparent_objcgs() + * + * The possible bad scenario would like: + * + * CPU0: CPU1: CPU2: + * lruvec = folio_lruvec() + * + * if (!isolate_lru_page()) + * mem_cgroup_move_account() + * + * memcg_reparent_objcgs() + * + * spin_lock(&lruvec->lru_lock) + * ^^^^^^ + * wrong lock + * + * Either CPU1 or CPU2 can change page memcg, so we need to check + * whether page memcg is changed, if so, we should reacquire the + * new lruvec lock. + */ if (unlikely(lruvec_memcg(lruvec) != folio_memcg(folio))) { spin_unlock(&lruvec->lru_lock); goto retry; } /* + * When we reach here, it means that the folio_memcg(folio) is stable. + * * Preemption is disabled in the internal of spin_lock, which can serve * as RCU read-side critical sections. */ @@ -1367,6 +1393,7 @@ struct lruvec *folio_lruvec_lock_irq(struct folio *folio) lruvec = folio_lruvec(folio); spin_lock_irq(&lruvec->lru_lock); + /* See the comments in folio_lruvec_lock(). */ if (unlikely(lruvec_memcg(lruvec) != folio_memcg(folio))) { spin_unlock_irq(&lruvec->lru_lock); goto retry; @@ -1402,6 +1429,7 @@ struct lruvec *folio_lruvec_lock_irqsave(struct folio *folio, lruvec = folio_lruvec(folio); spin_lock_irqsave(&lruvec->lru_lock, *flags); + /* See the comments in folio_lruvec_lock(). */ if (unlikely(lruvec_memcg(lruvec) != folio_memcg(folio))) { spin_unlock_irqrestore(&lruvec->lru_lock, *flags); goto retry; @@ -5751,7 +5779,10 @@ static int mem_cgroup_move_account(struct page *page, obj_cgroup_put(rcu_dereference(from->objcg)); rcu_read_unlock(); + /* See the comments in folio_lruvec_lock(). */ + spin_lock(&from_vec->lru_lock); folio->memcg_data = (unsigned long)rcu_access_pointer(to->objcg); + spin_unlock(&from_vec->lru_lock); __folio_memcg_unlock(from); diff --git a/mm/swap.c b/mm/swap.c index 9680f2fc48b1..984b100e84e4 100644 --- a/mm/swap.c +++ b/mm/swap.c @@ -199,14 +199,8 @@ static void pagevec_lru_move_fn(struct pagevec *pvec, struct page *page = pvec->pages[i]; struct folio *folio = page_folio(page); - /* block memcg migration during page moving between lru */ - if (!TestClearPageLRU(page)) - continue; - lruvec = folio_lruvec_relock_irqsave(folio, lruvec, &flags); (*move_fn)(page, lruvec); - - SetPageLRU(page); } if (lruvec) unlock_page_lruvec_irqrestore(lruvec, flags); @@ -218,7 +212,7 @@ static void pagevec_move_tail_fn(struct page *page, struct lruvec *lruvec) { struct folio *folio = page_folio(page); - if (!folio_test_unevictable(folio)) { + if (folio_test_lru(folio) && !folio_test_unevictable(folio)) { lruvec_del_folio(lruvec, folio); folio_clear_active(folio); lruvec_add_folio_tail(lruvec, folio); @@ -313,7 +307,8 @@ void lru_note_cost_folio(struct folio *folio) static void __folio_activate(struct folio *folio, struct lruvec *lruvec) { - if (!folio_test_active(folio) && !folio_test_unevictable(folio)) { + if (folio_test_lru(folio) && !folio_test_active(folio) && + !folio_test_unevictable(folio)) { long nr_pages = folio_nr_pages(folio); lruvec_del_folio(lruvec, folio); @@ -370,12 +365,9 @@ static void folio_activate(struct folio *folio) { struct lruvec *lruvec; - if (folio_test_clear_lru(folio)) { - lruvec = folio_lruvec_lock_irq(folio); - __folio_activate(folio, lruvec); - unlock_page_lruvec_irq(lruvec); - folio_set_lru(folio); - } + lruvec = folio_lruvec_lock_irq(folio); + __folio_activate(folio, lruvec); + unlock_page_lruvec_irq(lruvec); } #endif @@ -518,6 +510,9 @@ static void lru_deactivate_file_fn(struct page *page, struct lruvec *lruvec) bool active = PageActive(page); int nr_pages = thp_nr_pages(page); + if (!PageLRU(page)) + return; + if (PageUnevictable(page)) return; @@ -555,7 +550,7 @@ static void lru_deactivate_file_fn(struct page *page, struct lruvec *lruvec) static void lru_deactivate_fn(struct page *page, struct lruvec *lruvec) { - if (PageActive(page) && !PageUnevictable(page)) { + if (PageLRU(page) && PageActive(page) && !PageUnevictable(page)) { int nr_pages = thp_nr_pages(page); del_page_from_lru_list(page, lruvec); @@ -571,7 +566,7 @@ static void lru_deactivate_fn(struct page *page, struct lruvec *lruvec) static void lru_lazyfree_fn(struct page *page, struct lruvec *lruvec) { - if (PageAnon(page) && PageSwapBacked(page) && + if (PageLRU(page) && PageAnon(page) && PageSwapBacked(page) && !PageSwapCache(page) && !PageUnevictable(page)) { int nr_pages = thp_nr_pages(page); @@ -1006,8 +1001,9 @@ void __pagevec_release(struct pagevec *pvec) } EXPORT_SYMBOL(__pagevec_release); -static void __pagevec_lru_add_fn(struct folio *folio, struct lruvec *lruvec) +static void __pagevec_lru_add_fn(struct page *page, struct lruvec *lruvec) { + struct folio *folio = page_folio(page); int was_unevictable = folio_test_clear_unevictable(folio); long nr_pages = folio_nr_pages(folio); @@ -1053,20 +1049,7 @@ static void __pagevec_lru_add_fn(struct folio *folio, struct lruvec *lruvec) */ void __pagevec_lru_add(struct pagevec *pvec) { - int i; - struct lruvec *lruvec = NULL; - unsigned long flags = 0; - - for (i = 0; i < pagevec_count(pvec); i++) { - struct folio *folio = page_folio(pvec->pages[i]); - - lruvec = folio_lruvec_relock_irqsave(folio, lruvec, &flags); - __pagevec_lru_add_fn(folio, lruvec); - } - if (lruvec) - unlock_page_lruvec_irqrestore(lruvec, flags); - release_pages(pvec->pages, pvec->nr); - pagevec_reinit(pvec); + pagevec_lru_move_fn(pvec, __pagevec_lru_add_fn); } /** diff --git a/mm/vmscan.c b/mm/vmscan.c index 6c9e2eafc8f9..ec1272ca5ead 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -4793,18 +4793,17 @@ void check_move_unevictable_pages(struct pagevec *pvec) nr_pages = thp_nr_pages(page); pgscanned += nr_pages; - /* block memcg migration during page moving between lru */ - if (!TestClearPageLRU(page)) + lruvec = folio_lruvec_relock_irq(folio, lruvec); + + if (!PageLRU(page) || !PageUnevictable(page)) continue; - lruvec = folio_lruvec_relock_irq(folio, lruvec); - if (page_evictable(page) && PageUnevictable(page)) { + if (page_evictable(page)) { del_page_from_lru_list(page, lruvec); ClearPageUnevictable(page); add_page_to_lru_list(page, lruvec); pgrescued += nr_pages; } - SetPageLRU(page); } if (lruvec) { -- 2.11.0
WARNING: multiple messages have this Message-ID (diff)
From: Muchun Song <songmuchun-EC8Uxl6Npydl57MIdRCFDg@public.gmane.org> To: hannes-druUgvl0LCNAfugRpC6u6w@public.gmane.org, mhocko-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, roman.gushchin-fxUVXftIFDnyG1zEObXtfA@public.gmane.org, shakeelb-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org Cc: cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-mm-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, duanxiongchun-EC8Uxl6Npydl57MIdRCFDg@public.gmane.org, longman-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org, Muchun Song <songmuchun-EC8Uxl6Npydl57MIdRCFDg@public.gmane.org> Subject: [PATCH v4 11/11] mm: lru: use lruvec lock to serialize memcg changes Date: Tue, 24 May 2022 14:05:51 +0800 [thread overview] Message-ID: <20220524060551.80037-12-songmuchun@bytedance.com> (raw) In-Reply-To: <20220524060551.80037-1-songmuchun-EC8Uxl6Npydl57MIdRCFDg@public.gmane.org> As described by commit fc574c23558c ("mm/swap.c: serialize memcg changes in pagevec_lru_move_fn"), TestClearPageLRU() aims to serialize mem_cgroup_move_account() during pagevec_lru_move_fn(). Now folio_lruvec_lock*() has the ability to detect whether page memcg has been changed. So we can use lruvec lock to serialize mem_cgroup_move_account() during pagevec_lru_move_fn(). This change is a partial revert of the commit fc574c23558c ("mm/swap.c: serialize memcg changes in pagevec_lru_move_fn"). And pagevec_lru_move_fn() is more hot compare with mem_cgroup_move_account(), removing an atomic operation would be an optimization. Also this change would not dirty cacheline for a page which isn't on the LRU. Signed-off-by: Muchun Song <songmuchun-EC8Uxl6Npydl57MIdRCFDg@public.gmane.org> --- mm/memcontrol.c | 31 +++++++++++++++++++++++++++++++ mm/swap.c | 45 ++++++++++++++------------------------------- mm/vmscan.c | 9 ++++----- 3 files changed, 49 insertions(+), 36 deletions(-) diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 1a35f7fde3ed..7b6d9c308d91 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -1331,12 +1331,38 @@ struct lruvec *folio_lruvec_lock(struct folio *folio) lruvec = folio_lruvec(folio); spin_lock(&lruvec->lru_lock); + /* + * The memcg of the page can be changed by any the following routines: + * + * 1) mem_cgroup_move_account() or + * 2) memcg_reparent_objcgs() + * + * The possible bad scenario would like: + * + * CPU0: CPU1: CPU2: + * lruvec = folio_lruvec() + * + * if (!isolate_lru_page()) + * mem_cgroup_move_account() + * + * memcg_reparent_objcgs() + * + * spin_lock(&lruvec->lru_lock) + * ^^^^^^ + * wrong lock + * + * Either CPU1 or CPU2 can change page memcg, so we need to check + * whether page memcg is changed, if so, we should reacquire the + * new lruvec lock. + */ if (unlikely(lruvec_memcg(lruvec) != folio_memcg(folio))) { spin_unlock(&lruvec->lru_lock); goto retry; } /* + * When we reach here, it means that the folio_memcg(folio) is stable. + * * Preemption is disabled in the internal of spin_lock, which can serve * as RCU read-side critical sections. */ @@ -1367,6 +1393,7 @@ struct lruvec *folio_lruvec_lock_irq(struct folio *folio) lruvec = folio_lruvec(folio); spin_lock_irq(&lruvec->lru_lock); + /* See the comments in folio_lruvec_lock(). */ if (unlikely(lruvec_memcg(lruvec) != folio_memcg(folio))) { spin_unlock_irq(&lruvec->lru_lock); goto retry; @@ -1402,6 +1429,7 @@ struct lruvec *folio_lruvec_lock_irqsave(struct folio *folio, lruvec = folio_lruvec(folio); spin_lock_irqsave(&lruvec->lru_lock, *flags); + /* See the comments in folio_lruvec_lock(). */ if (unlikely(lruvec_memcg(lruvec) != folio_memcg(folio))) { spin_unlock_irqrestore(&lruvec->lru_lock, *flags); goto retry; @@ -5751,7 +5779,10 @@ static int mem_cgroup_move_account(struct page *page, obj_cgroup_put(rcu_dereference(from->objcg)); rcu_read_unlock(); + /* See the comments in folio_lruvec_lock(). */ + spin_lock(&from_vec->lru_lock); folio->memcg_data = (unsigned long)rcu_access_pointer(to->objcg); + spin_unlock(&from_vec->lru_lock); __folio_memcg_unlock(from); diff --git a/mm/swap.c b/mm/swap.c index 9680f2fc48b1..984b100e84e4 100644 --- a/mm/swap.c +++ b/mm/swap.c @@ -199,14 +199,8 @@ static void pagevec_lru_move_fn(struct pagevec *pvec, struct page *page = pvec->pages[i]; struct folio *folio = page_folio(page); - /* block memcg migration during page moving between lru */ - if (!TestClearPageLRU(page)) - continue; - lruvec = folio_lruvec_relock_irqsave(folio, lruvec, &flags); (*move_fn)(page, lruvec); - - SetPageLRU(page); } if (lruvec) unlock_page_lruvec_irqrestore(lruvec, flags); @@ -218,7 +212,7 @@ static void pagevec_move_tail_fn(struct page *page, struct lruvec *lruvec) { struct folio *folio = page_folio(page); - if (!folio_test_unevictable(folio)) { + if (folio_test_lru(folio) && !folio_test_unevictable(folio)) { lruvec_del_folio(lruvec, folio); folio_clear_active(folio); lruvec_add_folio_tail(lruvec, folio); @@ -313,7 +307,8 @@ void lru_note_cost_folio(struct folio *folio) static void __folio_activate(struct folio *folio, struct lruvec *lruvec) { - if (!folio_test_active(folio) && !folio_test_unevictable(folio)) { + if (folio_test_lru(folio) && !folio_test_active(folio) && + !folio_test_unevictable(folio)) { long nr_pages = folio_nr_pages(folio); lruvec_del_folio(lruvec, folio); @@ -370,12 +365,9 @@ static void folio_activate(struct folio *folio) { struct lruvec *lruvec; - if (folio_test_clear_lru(folio)) { - lruvec = folio_lruvec_lock_irq(folio); - __folio_activate(folio, lruvec); - unlock_page_lruvec_irq(lruvec); - folio_set_lru(folio); - } + lruvec = folio_lruvec_lock_irq(folio); + __folio_activate(folio, lruvec); + unlock_page_lruvec_irq(lruvec); } #endif @@ -518,6 +510,9 @@ static void lru_deactivate_file_fn(struct page *page, struct lruvec *lruvec) bool active = PageActive(page); int nr_pages = thp_nr_pages(page); + if (!PageLRU(page)) + return; + if (PageUnevictable(page)) return; @@ -555,7 +550,7 @@ static void lru_deactivate_file_fn(struct page *page, struct lruvec *lruvec) static void lru_deactivate_fn(struct page *page, struct lruvec *lruvec) { - if (PageActive(page) && !PageUnevictable(page)) { + if (PageLRU(page) && PageActive(page) && !PageUnevictable(page)) { int nr_pages = thp_nr_pages(page); del_page_from_lru_list(page, lruvec); @@ -571,7 +566,7 @@ static void lru_deactivate_fn(struct page *page, struct lruvec *lruvec) static void lru_lazyfree_fn(struct page *page, struct lruvec *lruvec) { - if (PageAnon(page) && PageSwapBacked(page) && + if (PageLRU(page) && PageAnon(page) && PageSwapBacked(page) && !PageSwapCache(page) && !PageUnevictable(page)) { int nr_pages = thp_nr_pages(page); @@ -1006,8 +1001,9 @@ void __pagevec_release(struct pagevec *pvec) } EXPORT_SYMBOL(__pagevec_release); -static void __pagevec_lru_add_fn(struct folio *folio, struct lruvec *lruvec) +static void __pagevec_lru_add_fn(struct page *page, struct lruvec *lruvec) { + struct folio *folio = page_folio(page); int was_unevictable = folio_test_clear_unevictable(folio); long nr_pages = folio_nr_pages(folio); @@ -1053,20 +1049,7 @@ static void __pagevec_lru_add_fn(struct folio *folio, struct lruvec *lruvec) */ void __pagevec_lru_add(struct pagevec *pvec) { - int i; - struct lruvec *lruvec = NULL; - unsigned long flags = 0; - - for (i = 0; i < pagevec_count(pvec); i++) { - struct folio *folio = page_folio(pvec->pages[i]); - - lruvec = folio_lruvec_relock_irqsave(folio, lruvec, &flags); - __pagevec_lru_add_fn(folio, lruvec); - } - if (lruvec) - unlock_page_lruvec_irqrestore(lruvec, flags); - release_pages(pvec->pages, pvec->nr); - pagevec_reinit(pvec); + pagevec_lru_move_fn(pvec, __pagevec_lru_add_fn); } /** diff --git a/mm/vmscan.c b/mm/vmscan.c index 6c9e2eafc8f9..ec1272ca5ead 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -4793,18 +4793,17 @@ void check_move_unevictable_pages(struct pagevec *pvec) nr_pages = thp_nr_pages(page); pgscanned += nr_pages; - /* block memcg migration during page moving between lru */ - if (!TestClearPageLRU(page)) + lruvec = folio_lruvec_relock_irq(folio, lruvec); + + if (!PageLRU(page) || !PageUnevictable(page)) continue; - lruvec = folio_lruvec_relock_irq(folio, lruvec); - if (page_evictable(page) && PageUnevictable(page)) { + if (page_evictable(page)) { del_page_from_lru_list(page, lruvec); ClearPageUnevictable(page); add_page_to_lru_list(page, lruvec); pgrescued += nr_pages; } - SetPageLRU(page); } if (lruvec) { -- 2.11.0
next prev parent reply other threads:[~2022-05-24 6:28 UTC|newest] Thread overview: 93+ messages / expand[flat|nested] mbox.gz Atom feed top 2022-05-24 6:05 [PATCH v4 00/11] Use obj_cgroup APIs to charge the LRU pages Muchun Song 2022-05-24 6:05 ` Muchun Song 2022-05-24 6:05 ` [PATCH v4 01/11] mm: memcontrol: prepare objcg API for non-kmem usage Muchun Song 2022-05-24 6:05 ` Muchun Song 2022-05-24 19:01 ` Johannes Weiner 2022-05-24 19:01 ` Johannes Weiner 2022-05-25 8:46 ` Muchun Song 2022-05-25 8:46 ` Muchun Song 2022-05-25 2:36 ` Roman Gushchin 2022-05-25 2:36 ` Roman Gushchin 2022-05-25 7:57 ` Muchun Song 2022-05-25 7:57 ` Muchun Song 2022-05-25 12:37 ` Johannes Weiner 2022-05-25 12:37 ` Johannes Weiner 2022-05-25 13:08 ` Muchun Song 2022-05-25 13:08 ` Muchun Song 2022-05-24 6:05 ` [PATCH v4 02/11] mm: memcontrol: introduce compact_folio_lruvec_lock_irqsave Muchun Song 2022-05-24 6:05 ` Muchun Song 2022-05-24 19:22 ` Johannes Weiner 2022-05-24 19:22 ` Johannes Weiner 2022-05-25 9:38 ` Muchun Song 2022-05-25 9:38 ` Muchun Song 2022-05-24 6:05 ` [PATCH v4 03/11] mm: memcontrol: make lruvec lock safe when LRU pages are reparented Muchun Song 2022-05-24 6:05 ` Muchun Song 2022-05-24 19:23 ` Waiman Long 2022-05-25 10:20 ` Muchun Song 2022-05-25 10:20 ` Muchun Song 2022-05-25 14:59 ` Waiman Long 2022-05-25 14:59 ` Waiman Long 2022-05-24 19:27 ` Johannes Weiner 2022-05-24 19:27 ` Johannes Weiner 2022-05-25 9:53 ` Muchun Song 2022-05-25 9:53 ` Muchun Song 2022-05-25 12:30 ` Johannes Weiner 2022-05-25 12:30 ` Johannes Weiner 2022-05-25 13:03 ` Muchun Song 2022-05-25 13:03 ` Muchun Song 2022-05-25 14:48 ` Johannes Weiner 2022-05-25 14:48 ` Johannes Weiner 2022-05-25 15:38 ` Muchun Song 2022-05-25 15:38 ` Muchun Song 2022-05-26 20:17 ` Waiman Long 2022-05-26 20:17 ` Waiman Long 2022-05-27 2:55 ` Muchun Song 2022-05-27 2:55 ` Muchun Song 2022-05-24 6:05 ` [PATCH v4 04/11] mm: vmscan: rework move_pages_to_lru() Muchun Song 2022-05-24 6:05 ` Muchun Song 2022-05-24 19:38 ` Johannes Weiner 2022-05-24 19:38 ` Johannes Weiner 2022-05-25 11:38 ` Muchun Song 2022-05-25 11:38 ` Muchun Song 2022-05-24 19:52 ` Waiman Long 2022-05-24 19:52 ` Waiman Long 2022-05-25 11:43 ` Muchun Song 2022-05-25 11:43 ` Muchun Song 2022-05-25 2:43 ` Roman Gushchin 2022-05-25 2:43 ` Roman Gushchin 2022-05-25 11:41 ` Muchun Song 2022-05-25 11:41 ` Muchun Song 2022-05-24 6:05 ` [PATCH v4 05/11] mm: thp: introduce folio_split_queue_lock{_irqsave}() Muchun Song 2022-05-24 6:05 ` Muchun Song 2022-05-24 6:05 ` [PATCH v4 06/11] mm: thp: make split queue lock safe when LRU pages are reparented Muchun Song 2022-05-24 6:05 ` Muchun Song 2022-05-25 2:54 ` Roman Gushchin 2022-05-25 2:54 ` Roman Gushchin 2022-05-25 11:44 ` Muchun Song 2022-05-25 11:44 ` Muchun Song 2022-05-24 6:05 ` [PATCH v4 07/11] mm: memcontrol: make all the callers of {folio,page}_memcg() safe Muchun Song 2022-05-24 6:05 ` Muchun Song 2022-05-25 3:03 ` Roman Gushchin 2022-05-25 3:03 ` Roman Gushchin 2022-05-25 11:51 ` Muchun Song 2022-05-25 11:51 ` Muchun Song 2022-05-24 6:05 ` [PATCH v4 08/11] mm: memcontrol: introduce memcg_reparent_ops Muchun Song 2022-05-24 6:05 ` Muchun Song 2022-05-24 6:05 ` [PATCH v4 09/11] mm: memcontrol: use obj_cgroup APIs to charge the LRU pages Muchun Song 2022-05-24 6:05 ` Muchun Song 2022-05-24 12:29 ` kernel test robot 2022-05-24 18:16 ` kernel test robot 2022-05-24 18:16 ` kernel test robot 2022-05-25 7:14 ` [mm] bec0ae1210: WARNING:possible_recursive_locking_detected kernel test robot 2022-05-25 7:14 ` kernel test robot 2022-05-24 6:05 ` [PATCH v4 10/11] mm: lru: add VM_BUG_ON_FOLIO to lru maintenance function Muchun Song 2022-05-24 6:05 ` Muchun Song 2022-05-24 19:44 ` Johannes Weiner 2022-05-24 19:44 ` Johannes Weiner 2022-05-25 11:59 ` Muchun Song 2022-05-25 11:59 ` Muchun Song 2022-05-25 2:40 ` Roman Gushchin 2022-05-25 2:40 ` Roman Gushchin 2022-05-25 11:58 ` Muchun Song 2022-05-24 6:05 ` Muchun Song [this message] 2022-05-24 6:05 ` [PATCH v4 11/11] mm: lru: use lruvec lock to serialize memcg changes Muchun Song
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